Pavement-plow.



C. H. CLARK.

PAVEMENT PLOW.

APPLlcATloN FILED SEPT. 11, 1914.

CHARLES H. CLARK, OF CLEVELAND, OHIO.

PAVEMENT-PLOW.

inseam.

Specification of Letters Patent.

Patented June`13, i916.

' Application led September 11, 1914. Serial No. 861,180.

To all wlw/m, t may concern:

Be it known that I, CHARLES H. CLARK, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in Pavement- Plows, ofwhich the following is a full, clear, and exact description.

The rails comprising the tracks of street railways in cities aregenerally secured on wood ties; the opposite rails are connected bymetal tie rods; a layer of sand is spread between the rails so as to beabout an inch thick over the ties; stone paving blocks are laid uponthis sand between the rails so that each tie rod lies between twotransversely extended rows of said paving blocks; and finally asphalt orcement or some equivalent is poured into the interstices between thepaving blocks, so as to firmly secure them together and prevent relativemovement. Sometimes, also, a layer of concrete about an inch thick, moreor less, is spread over the surface of said paving blocks. When it isdesired to relay the tracks (and this is of more or less frequentoccurrence) it is necessary to first remove the paving blocks frombetween the tracks, and then to disconnect the tie rods from the rails.Heretofore this work, preparatory to relaying tracks, has beeen done bymanual labor, the laborers using picks, crowbars and the like to loosenthe paving blocks, so that other men can pick them up and throw themaside; and wrenches or cold chisels to disconnect the tie rods from therails.

The object of this invention is to greatly reduce the cost of removingthe paving blocks, and of severing the tie rod connections between therails.

The invention resides in the machine which is shown in the drawing,adapted to be drawn or pushed along the tracks, and provided with meanswhich, as the car travels will completely loosen the pavement blocks, sothat they may be picked up and thrown aside by the workmen, and willlikewise cut the tie rods. So successfully does the machine shownperform the work for which it is organized, that it does the work whichheretofore has required four hundred men working the same period oftime.

In the drawings, Figure l is a side elevation of said invention. Fig. 2is a plan view thereof, Figs. 3, i and 5 are respectively verticalsectional views through the plow beam Vthe side frame members a, a, ofthe car, and

projects forward therefrom. It may have a rearwardly projecting arm Z1between which and the frame members a, a, of the car a beam K may beplaced, of suitable thickness to properly limit the downward movement ofthe front end of said beam. Vhen the machine is not in use the front endof said beam may be held above the pavement by a chain F engagingtherewith, and with a forwardly projecting overhanging beam l carried bythe car. This beam has at its front enda head D1 which is considerablywider than the beam and is extended equal distances laterally n on bothsides of said beam. The head at its widest part is considerably narrowerthan the distance between rails, because it has been found that when somade it will serve the purpose for which it was intended quite asefficiently as if it were wider. This head is quite narrow at its frontend, and said front end is beveled upward and downward so as to form arather blunt edge Z2 which, when the head is in working position, asshown in Fig. l, this front end will pass between the paving blocks Band the ties T without striking either. From this narrow front end, thehead diverges laterally until it is of sufficient width, and thenconverges and is merged into the beam. There is formed upon this head anupwardly extended rib als which is centrally placed and extends from apoint adjacent to the front end rearward at a slight inclination upwardto a point just behind the widest part of the head and from this pointsaid rib is inclined more steeply upward. Two other V-shaped ribs Z4 areformed on the upper surface of the head on opposite sides of the centralrib d3, which ribs d4 incline upward slightly from their front endsrearward, and args preferably not parallel with the central r1 neath thepavement blocks, and, beingy slightly inclined upward from its frontend, will lift the blocks from their seats. The central rib d3 lifts thepaving blocks in the middle above those on opposite sides thereof. Theribs l? will likewise imparta special upward movement to the blocksrbeneath which they pass. Although the head is considerably narrower thanthe distance between rails, it will nevertheless break they connectionAbetween blocks which lie outside of it, but'between the rails, as wellasV those beneath which it passes; and as a result the plow head, afterpassing, will leave the blocks between the rails, but so loosened fromtheir seats, and so completely sepa- -rated from one another, that menfollowing aftercan pick them up and throw them to one side. The headlikewise passes beneath the tie rods T1 and the central Vfshaped ribwill; engage the under surface of these tie rods ras it comes to them,and will lift their Y middle part upward and will eventually break them,or pull one end or the other loose from the rail with which it wasconnected. Y

Having described my invention, I claim: l. A railwayV paving plowcomprising, in combination, a car, a plow beam pivoted to said car on atransverse horizontal axis and extending forward therefrom, and havingat its front end a head whose top surface is inclined upward from itsfront end rearward, and which is provided with an upwardly extendedV-shaped rib which also inclines upward Afrom its front endrearward,'and means for limiting the downward swinging movement of thefront end of said plow beam thereby determining theu plane in which itwill travelrasthe car is moved forward.

2. A railway pavement plow, comprising in combination a car, a plow beampivoted to said car on a transverse horizontal axis and extended forwardtherefrom, said beam having at its front end a head which extends onopposite sides of said beam and has v a narrow front end adapted to passbeneath the pavement blocks, and sides which diverge from said front endrearward and has a smooth bottom: surface which adapts it to slide onthe'sand layer in which the paving blocks are laid, and having its topsurface inclined upward from its front end has a smooth bottomsurfacewhich adapts it to slide on the sand llayer in which theV paving blocksare laid, and having its top surface inclined upward from its front endrearward, there being a rib formed on said head and extended rearwardand onto said beam, the ltop surface of said rib being inclined upwardtowardthe rear, andV therek being on said head two ribs located onopposite sides of said central rib and having their top surfacesinclined upward toward the rear. Y A

In testimony whereof, I hereunto affix my signature in the presence Voftwo witnesses. CHARLES I-I. CLARK. Witnesses: Y

'E B. GILGHRIST,

L. I. PORTER.

Copies of this patent may ne obtained for ve cents each, by addressingthe Commissioner o1 Patents,

' Washington, D. C. Y

